/ Dictionary / Index I isolative: Meaning and Definition of Find definitions for: i•so•la•tive Pronunciation: (ī'su-lā"tiv, is'u-), [key] — adj. noting a change in part of the sound of a word made independently of the phonetic environment of that part. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isolationist isolato Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language